Comparison 1. Prevention of seizures in participants with brain tumors.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Seizure occurrence	5	404	Risk Ratio (M‐H, Random, 95% CI)	0.94 [0.55, 1.61]
2 Adverse event rate	3	237	Risk Ratio (M‐H, Random, 95% CI)	6.09 [1.07, 34.63]